Claves diagnósticas en el eccema diseminado: experiencia de una unidad de Dermatitis de Contacto (2003-2019) / Diagnostic keys for disseminated eczema: experience of a Dermatitis Contact unit (2003-2019)

El objetivo de este estudio fue establecer los diagnósticos de los pacientes con eccema diseminado y analizar los alérgenos implicados en el eccema diseminado por dermatitis alérgica de contacto. Para ello, se analizaron los datos de los pacientes con diagnóstico de eccema diseminado/generalizado a los que se les había realizado anamnesis, exploración física y pruebas epicutáneas en una consulta de Dermatitis de Contacto en el periodo 2003-2019. El diagnóstico más frecuente fue dermatitis alérgica de contacto, seguido de dermatitis atópica, eccema asteatósico y eccema gravitacional. Los alérgenos más frecuentemente implicados en dermatitis de contacto alérgica fueron las isotiazolinonas, los medicamentos tópicos, la parafenilendiamina y las fragancias. La dermatitis alérgica de contacto causó casi la mitad de los casos de eccema diseminado. Por ello, consideramos conveniente que los pacientes con eccema diseminado sean valorados en una Unidad de Contacto y se sometan a la realización de pruebas epicutáneas.(AU)

The aim of this study was to establish the diagnoses of patients with disseminated eczema and analyze the allergens involved in disseminated eczema due to allergic contact dermatitis. We analyzed the data from patients with a diagnosis of disseminated / generalized eczema who had undergone anamnesis, physical examination and patch tests in a Contact Dermatitis consultation from 2003 to 2019. Allergic contact dermatitis was the most frequent diagnosis, followed by atopic dermatitis, asteatotic eczema, and gravitational eczema. The allergens most frequently involved in allergic contact dermatitis were isothiazolinones, topical medications, paraphenylenediamine, and fragrances. Allergic contact dermatitis caused almost half of the cases of disseminated eczema. It would be therefore advisable for patients with disseminated eczema to be assessed at a Contact Dermatitis unit and undergo patch tests.

[Diagnostic keys for disseminated eczema: experience of a Dermatitis Contact unit (2003-2019)].

The aim of this study was to establish the diagnoses of patients with disseminated eczema and analyze the allergens involved in disseminated eczema due to allergic contact dermatitis. We analyzed the data from patients with a diagnosis of disseminated / generalized eczema who had undergone anamnesis, physical examination and patch tests in a Contact Dermatitis consultation from 2003 to 2019. Allergic contact dermatitis was the most frequent diagnosis, folowed by atopic dermatitis, asteatotic eczema, and gravitational eczema. The allergens most frequently involved in allergic contact dermatitis were isothiazolinones, topical medications, paraphenylenediamine, and fragrances. Allergic contact dermatitis caused almost half of the cases of disseminated eczema. It would be therefore advisable for patients with disseminated eczema to be assessed at a Contact Dermatitis unit and undergo patch tests.

Guidelines for the Diagnosis, Treatment, and Prevention of Hand Eczema. / Guía para el diagnóstico, el tratamiento y la prevención del eccema de manos.

Hand eczema is a common condition associated with significantly impaired quality of life and high social and occupational costs. Managing hand eczema is particularly challenging for primary care and occupational health physicians as the condition has varying causes and both disease progression and response to treatment are difficult to predict. Early diagnosis and appropriate protective measures are essential to prevent progression to chronic eczema, which is much more difficult to treat. Appropriate referral to a specialist and opportune evaluation of the need for sick leave are crucial to the good management of these patients. These guidelines cover the diagnosis, prevention, and treatment of chronic hand eczema and highlight the role that primary care and occupational health physicians can play in the early management of this disease.

Guía para el diagnóstico, el tratamiento y la prevención del eccema de manos / Guidelines for the Diagnosis, Treatment, and Prevention of Hand Eczema

El eccema de manos es una patología frecuente con un fuerte impacto en la calidad de vida de los pacientes y un alto coste social y laboral. Su manejo por los médicos de atención primaria y de medicina del trabajo es complejo debido a la variedad de etiologías, la evolución difícilmente predecible de la enfermedad y la respuesta al tratamiento. El diagnóstico precoz y las medidas protectoras adecuadas son esenciales para evitar la cronificación, que es mucho más difícil de tratar. Una correcta derivación a un especialista y la valoración de una baja laboral en el momento adecuado resultan cruciales para un buen manejo de estos pacientes. En esta guía sobre el eccema crónico de manos analizamos el proceso diagnóstico, las medidas preventivas y los tratamientos, con especial énfasis en el papel del médico de atención primaria y de medicina del trabajo en los estados iniciales de su manejo

Hand eczema is a common condition associated with significantly impaired quality of life and high social and occupational costs. Managing hand eczema is particularly challenging for primary care and occupational health physicians as the condition has varying causes and both disease progression and response to treatment are difficult to predict. Early diagnosis and appropriate protective measures are essential to prevent progression to chronic eczema, which is much more difficult to treat. Appropriate referral to a specialist and opportune evaluation of the need for sick leave are crucial to the good management of these patients. These guidelines cover the diagnosis, prevention, and treatment of chronic hand eczema and highlight the role that primary care and occupational health physicians can play in the early management of this disease

[Dermoscopic signs as predictors of non-response to imiquimod treatment in superficial basal cell carcinoma]. / Criterios dermatoscópicos como predictores de ausencia de respuesta a tratamiento con imiquimod en carcinomas basocelulares superficiales.

BACKGROUND: To describe the dermoscopic features in superficial basal cell carcinoma that are associated with a poor therapeutic response to imiquimod treatment. METHOD: Clinical and dermatoscopic photographs of 56 superficial basal cell carcinomas of different patients were compared retrospectively, assessed in our office for five years and treated with topic 5% imiquimod five days a week for six weeks. The different dermatoscopic signs of the lesions were identified and the association of each of them with the response to treatment was assessed. RESULTS: A total response to treatment was achieved by 69.5% of the lesions of patients treated with imiquimod. Dermatoscopy of responding lesions showed a higher frequency of lesions with in focus gray dots (43.6%) and multiple erosions of less than 2 mm (61.5%), without observing statistically significant differences. Within the group with poor response to treatment, a greater number of lesions were found with the presence of arborizing telangiectasias (58.8%), blue-gray ovoid nests (41.1%), ulceration (58.8%), shiny white-red structureless areas (82.2%) and chrysalis (41.2%). The areas in blue-white veil areas (23.5%) and rainbow pattern (23.5%) were only observed in non-responding lesions. Both groups were similar regarding age, sex, diameter of lesions and frequency of some dermatoscopic signs: fine short telangiectasias, gray blue globules, arc-leaf areas and cart-wheel structures. CONCLUSION: The study identified dermatoscopic criteria that are significantly associated with a worse response to treatment with imiquimod. In contrast, we found no dermatoscopic signs that correlate specifically to a complete response to treatment.

Actualización de la serie estándar española de pruebas alérgicas de contacto por el Grupo Español de Investigación en Dermatitis de Contacto y Alergia Cutánea (GEIDAC) para 2016 / The Spanish standard patch test series: 2016 update by the Spanish Contact Dermatitis and Skin Allergy Research Group (GEIDAC)

La serie estándar española de pruebas alérgicas de contacto recomendada por el Grupo Español de Investigación en Dermatitis de Contacto (GEIDAC) ha sido actualizada para 2016. La nueva serie sustituye a la que estaba vigente desde 2012, y el Grupo la recomienda utilizar a partir de ahora como herramienta básica de la consulta de eccema de contacto. La nueva serie estándar elimina, por la falta de frecuencia de positividades relevantes, 4 haptenos: clioquinol, tiomersal, mercurio y primina, y añade 3 nuevos: metilisotiazolinona, diazolidinil urea e imidazolidinil urea. Modifica además la concentración en agua de 2 haptenos clásicos muy importantes: la mezcla metilcloroisotiazolinona/metilisotiazolinona, que pasa a 200ppm aq, y el formaldehído, que se parcheará a partir de ahora al 2% aq. La actualización de la serie estándar española es una de las funciones del GEIDAC, que vela por su adecuación a la epidemiología y la casuística de nuestro entorno

The Spanish standard patch test series, as recommended by the Spanish Contact Dermatitis and Skin Allergy Research Group (GEIDAC), has been updated for 2016. The new series replaces the 2012 version and contains the minimum set of allergens recommended for routine investigation of contact allergy in Spain from 2016 onwards. Four haptens —clioquinol, thimerosal, mercury, and primin— have been eliminated owing to a low frequency of relevant allergic reactions, while 3 new allergens -methylisothiazolinone, diazolidinyl urea, and imidazolidinyl urea- have been added. GEIDAC has also modified the recommended aqueous solution concentrations for the 2 classic, major haptens methylchloroisothiazolinone and methylisothiazolinone, which are now to be tested at 200ppm in aqueous solution, and formaldehyde, which is now to be tested in a 2% aqueous solution. Updating the Spanish standard series is one of the functions of GEIDAC, which is responsible for ensuring that the standard series is suited to the country's epidemiological profile and pattern of contact sensitization

The Spanish standard patch test series: 2016 update by the Spanish Contact Dermatitis and Skin Allergy Research Group (GEIDAC). / Actualización de la serie estándar española de pruebas alérgicas de contacto por el Grupo Español de Investigación en Dermatitis de Contacto y Alergia Cutánea (GEIDAC) para 2016.

The Spanish standard patch test series, as recommended by the Spanish Contact Dermatitis and Skin Allergy Research Group (GEIDAC), has been updated for 2016. The new series replaces the 2012 version and contains the minimum set of allergens recommended for routine investigation of contact allergy in Spain from 2016 onwards. Four haptens -clioquinol, thimerosal, mercury, and primin- have been eliminated owing to a low frequency of relevant allergic reactions, while 3 new allergens -methylisothiazolinone, diazolidinyl urea, and imidazolidinyl urea- have been added. GEIDAC has also modified the recommended aqueous solution concentrations for the 2 classic, major haptens methylchloroisothiazolinone and methylisothiazolinone, which are now to be tested at 200ppm in aqueous solution, and formaldehyde, which is now to be tested in a 2% aqueous solution. Updating the Spanish standard series is one of the functions of GEIDAC, which is responsible for ensuring that the standard series is suited to the country's epidemiological profile and pattern of contact sensitization.

Eccema de labios. Experiencia en la Unidad de Eccema de Contacto de un centro terciario español / Lip eczema. Experience in the Contact Dermatitis Unit of a Spanish tertiary hospital

Fundamento: El eccema labial es un problema poco frecuente en las Unidades de Eccema de Contacto (UEC). Hasta el momento han sido publicadas escasas series que muestren el perfil de estos pacientes y las causas de su eccema, ninguna de ellas española. El objetivo de este estudio fue el de analizar el perfil epidemiológico de los pacientes que acuden a la UEC en nuestro entorno, los diagnósticos principales y los alérgenos relevantes. Material y métodos: Se realizó una revisión retrospectiva de los pacientes remitidos a la UEC en el periodo 2005-2014. Se realizaron pruebas epicutáneas con la serie estándar ampliada del Grupo Español de Investigación en Dermatitis Alérgica de contacto (GEIDAC), productos propios y otras baterías complementarias. Resultados: En los 78 pacientes estudiados, los diagnósticos más frecuentes fueron la dermatitis de contacto alérgica y la dermatitis atópica. Los alérgenos relevantes más frecuentes fueron los cosméticos y los fármacos tópicos. Conclusiones: Es fundamental estudiar a los pacientes con eccema labial con pruebas epicutáneas para poder filiar correctamente su etiología y según esto, realizar un tratamiento más adecuado (AU)

Background: Lip eczema is an infrequent problem in Contact Dermatitis Units (CDU). Very few series have been published to date that show the profiles of such patients and the causes of their eczemas, and none are Spanish. The goal of this study was to analyze the epidemiological profile of the patients who attend a CDU in our setting, the main diagnoses and the relevant allergens. Methods: A retrospective review was made of the patients referred to the CDU in the 2005-2014 period. Patch tests were carried out with the extended standard series of the Spanish Research Group on Allergic Contact Dermatitis (Grupo Español de Investigación en Dermatitis Alérgica de contacto - GEIDAC), our own products and other complementary sets. Results: The most frequent diagnoses in the 78 patients studied were allergic contact dermatitis and atopic dermatitis. The most frequent relevant allergens were cosmetics and topical medications. Conclusions: It is essential to study the patients with lip eczema with patch tests to be able to correctly determine their etiology and accordingly to carry out the most suitable treatment (AU)

¿Qué genodermatosis es? / Can You Identify the Genodermatosis?

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[Secondary effects of topical application of an essential oil. Allergic contact dermatitis due to tea tree oil]. / Efectos secundarios de la aplicación tópica de un aceite de esencial. Dermatitis alérgica de contacto a aceite de árbol de té.

BACKGROUND: Tea tree oil is an essential oil, whose use is increasing in our setting, due both to its supposed medicinal effects and to its aromatic properties. We describe our experience with allergic contact dermatitis following the application of this oil. MATERIAL AND METHODS: Five patients in the last 5 years (0.4% of all the patients studied in specialized consultation) reacted to a 5% concentration of tea tree oil in Vaseline. RESULTS: All the patients presented strong reactions, and in all cases these were considered relevant. Three of them also reacted to oxidized d-limonene, one of the components of tea tree oil, which is present in our standard series. CONCLUSIONS: Different cases have been described in the literature on allergic contact dermatitis due to tea tree oil, but until recently it was infrequent in our setting. With the increased popularity of alternative and natural therapies we have witnessed several cases of sensitization to this essential oil, which had been used to treat several supposedly "infectious" skin diseases, but which were very probably different forms of dermatitis.

Efectos secundarios de la aplicación tópica de un aceite de esencial. Dermatitis alérgica de contacto a aceite de árbol de té / Secondary effects of topical application of an essential oil. Allergic contact dermatitis due to tea tree oil

Fundamento: El aceite de árbol de té es un aceite esencial, cuyo uso está aumentando en nuestro medio, tanto por sus supuestos efectos medicinales, como por sus propiedades aromáticas. Se describe nuestra experiencia en dermatitis alérgica de contacto tras la aplicación de este aceite. Material y Métodos: Cinco pacientes en los últimos 5 años (0,4% de todos los pacientes estudiados en consulta especializada) reaccionaron a una concentración de 5% de aceite de árbol de té en vaselina. Resultados: Todos los pacientes presentaron reacciones fuertes, y en todos los casos éstas fueron consideradas relevantes. Tres de ellos reaccionaron también a d-limoneno oxidado, uno de los componentes del aceite de árbol de té, que está presente en nuestra serie estándar. Conclusiones: Se han descrito diversos casos en la literatura de dermatitis alérgica de contacto al aceite de árbol de té, pero hasta hace poco ha sido infrecuente en nuestro medio. Con el aumento de popularidad de terapias alternativas y naturales hemos sido testigos de varios casos de sensibilización a este aceite esencial, que había sido utilizado para tratar varias enfermedades de la piel supuestamente "infecciosas", pero que eran muy probablemente diferentes formas de dermatitis (AU)

Background: Tea tree oil is an essential oil, whose use is increasing in our setting, due both to its supposed medicinal effects and to its aromatic properties. We describe our experience with allergic contact dermatitis following the application of this oil. Material and methods: Five patients in the last 5 years (0.4% of all the patients studied in specialized consultation) reacted to a 5% concentration of tea tree oil in Vaseline. Results: All the patients presented strong reactions, and in all cases these were considered relevant. Three of them also reacted to oxidized d-limonene, one of the components of tea tree oil, which is present in our standard series. Conclusions: Different cases have been described in the literature on allergic contact dermatitis due to tea tree oil, but until recently it was infrequent in our setting. With the increased popularity of alternative and natural therapies we have witnessed several cases of sensitization to this essential oil, which had been used to treat several supposedly "infectious" skin diseases, but which were very probably different forms of dermatitis (AU)

[Lip eczema. Experience in the Contact Dermatitis Unit of a Spanish tertiary hospital]. / Eccema de labios. Experiencia en la Unidad de Eccema de Contacto de un centro terciario español.

BACKGROUND: Lip eczema is an infrequent problem in Contact Dermatitis Units (CDU). Very few series have been published to date that show the profiles of such patients and the causes of their eczemas, and none are Spanish. The goal of this study was to analyze the epidemiological profile of the patients who attend a CDU in our setting, the main diagnoses and the relevant allergens. METHODS: A retrospective review was made of the patients referred to the CDU in the 2005-2014 period. Patch tests were carried out with the extended standard series of the Spanish Research Group on Allergic Contact Dermatitis (Grupo Español de Investigación en Dermatitis Alérgica de contacto - GEIDAC), our own products and other complementary sets. RESULTS: The most frequent diagnoses in the 78 patients studied were allergic contact dermatitis and atopic dermatitis. The most frequent relevant allergens were cosmetics and topical medications. CONCLUSIONS: It is essential to study the patients with lip eczema with patch tests to be able to correctly determine their etiology and accordingly to carry out the most suitable treatment.